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Sedan? Those seem to have more lighting troubles.
I hard-wired one side of sedan fully, did a few wires on the other side.
Here's a color code writeup below.
A Dremel is good for smoothing out any overheated warped places on the plastic frame. the white wire connectors can be opened up, and you can clean the silver grabber fingers that make contact - if you want those connectors. I cut one off and spliced in hard wires direct to the bulbs.
You'll need a voltmeter or multitester to figure out the missing bits I've left out. Be careful in sleuthing; you don't want to hard-wire in a new short circuit or other bad stuff. A stick jammed against brake will fire up the brake lights, brace it against the rise in floor at front of seat. Works even with the key out, at least on our '90.
Soldering to the bulb holder contacts isn't as quick as you'd think - they're nickel plated or maybe solid stainless; solder doesn't like it much and it's hard to drill the contact tabs to create a place to thread/wrap the wire. But it's doable with patience.
Rear lights pinout
http://www.brickboard.com/RWD/index.htm?id=1145441&nr_no=1
Below is according to the diagrams in the Haynes book.
Left brake light: yellow + green
Right brake light: yellow
Center brake light: blue + black
Left rear turn sig: blue + green
Right rear turn sig: blue
Left tail light: red
Right tail light: brown
Lic. plate lights: white
Sorry, it doesn't tell me the fog lights color.
Fog lights as well as backup lights are each fed by a single wire going to the left lamp cluster. The contact on the connector meets a double-wide copper patch on the circuit board. A neighboring contact picks up the voltage from that double-wide contact patch and feeds it back into the nylon connector, into an appropriate wire going across to the other side.
So, for fogs as well as backups, pulling the left side connector disables the backups and fogs for both sides.
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Sven: '89 245 NA, 951 ECU, open-front airbox, E-fan, 205/65-15's, IPD sways, E-Codes, amber front corner reflectors, quad horns. Wifemobile '89 245 NA stock. 90 244 NA spare, runs.
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